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RADIO SCIENCE,
VOL. 44,
RS5013,
12 PP., 2009
doi:10.1029/2009RS004175
Implementation of polarization agility in planar phased-array antennas by means of interleaved subarrays
International Research Centre for Telecommunications and Radar, Delft University of Technology, Delft, Netherlands
International Research Centre for Telecommunications and Radar, Delft University of Technology, Delft, Netherlands
NATO Consultation, Command and Control Agency, The Hague, Netherlands
International Research Centre for Telecommunications and Radar, Delft University of Technology, Delft, Netherlands
A method for ensuring polarization agility in conjunction with beam steering in planar array antennas is proposed. It relies on interleaving two subarrays with orthogonal, linear polarizations that, together, can generate arbitrary polarization states: adjustable linear, elliptical, and left- or right-handed circular. The complexity of the resulting system is comparable with that of standard, fully populated array antennas consisting of identical, linearly polarized elements. By dynamically controlling the amplitude and the phase of the signals fed to the subarrays, a stable polarization state can be maintained during beam steering. The concept is validated by numerically investigating an architecture obtained by interleaving nonuniform subarrays designed by means of a deterministic placement strategy. The effects of the mutual coupling between the different radiating elements are modeled and discussed.
Received 9 March 2009; accepted 21 July 2009; published 21 October 2009.
Citation: (2009), Implementation of polarization agility in planar phased-array antennas by means of interleaved subarrays, Radio Sci., 44, RS5013, doi:10.1029/2009RS004175.
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